I hope my reply did not come off as snarky. It was not my intention. I understand your situation (having a limited budget), especially since I have been there more often than not. It just seems that once you get bit by the knife bug, justifying "one more" knife is an all to common occurrence. I do it a lot, as do many other posters on this forum.
Can you provide us with more information as to what you will do with the knife and what criteria you are using to make your decision? You added the Manix to your list, and it is a very different (but awesome) knife. What about the Manix is attractive to you? I don't have my Manix with me now, but will be back home and have access to it tomorrow. I can take some pics of the 566, 350cf and Manix together so you can compare. If you have any other specific question, let me know.
IMHO, all the knives on your list are great, and I am pretty sure that you will not regret whichever one you purchase.
Cheers!
Well I will mainly be using the knife as an edc. I have plenty of knifes to do so, but I have really been itching for a more quality steel/knife. The manix on the other hand, is pretty much a gonna buy eventually knife. So the manix is just kinda floating there, with these two. So don't worry about the manix, I appreciate the offer though

Plus, no I didn't take offense to your response

In fact I appreciate all of you, for even replying at all. I have been watching a lot of videos over the last few days on both of the ZT's (Staying away from Nuntfacy's video, I think the weight is what he doesn't like) So I do got a pretty good idea, of what each knife can do. Plus also, it might sound silly, but this definitely will also be a fondling blade

Mainly I am just looking for an overall higher quality blade, and I know both of these will do that job. After looking at a lot of things, I am leaning more to the 0350, I know that most people are saying the 0566, but I do have rather big hands, and a beefy knife does not bother me at all. Heck I carry my buck 110 a lot. I also like the feel of my Nirk Tighe, from crkt, it is a bit of a tank. So the only thing really concerning me on the 0350 is the handle length. I always use my tenacious as reference, because that handle length is perfect for my hand. So as long as the 0350 is good on that end, I am really leaning toward it, because I love the black g10 scales, and I also like the liner lock over the frame lock. Just my preference on the lock, for what I do, that this liner lock will do justice

So anyways, if you think the handle will be as long or longer than the tenacious, I might have my mind made up. Thanks again for all of the help, you guys are awesome!